<template>
  <div>
    <!-- 面包屑 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>参数列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片 -->
    <el-card>
      <!-- 警告区： -->
      <el-alert
        title="注意：只能为第三级分类设置参数！"
        type="warning"
        show-icon
        :closable="false"
      >
      </el-alert>

      <!-- 选择商品分类 -->

      <el-row class="cat_opt">
        <el-col>
          <span>选择商品分类 : </span>
          <el-cascader
            v-model="selectedCateKeys"
            :options="catelist"
            :props="{
              expandTrigger: 'hover',
              label: 'cat_name',
              value: 'cat_id',
              children: 'children',
            }"
            @change="handleChange"
          ></el-cascader>
        </el-col>
      </el-row>

      <!-- tab区 -->
      <el-tabs v-model="activeName" @tab-click="handleTabClick">
        <el-tab-pane label="动态参数" name="many">
          <!-- 按钮 -->
          <el-button
            :disabled="isBtnDisabled"
            size="mini"
            type="primary"
            @click="addDialogVisible = true"
            >添加参数</el-button
          >
          <!-- 表格 -->
          <el-table :data="manyTableData" border stripe>
            <el-table-column type="expand">
              <template slot-scope="scope">
                <el-tag
                  v-for="(item, i) in scope.row.attr_vals"
                  :key="i"
                  closable
                  @close='handleClose(i, scope.row)'
                  >{{ item }}</el-tag
                >

                <el-input
                  class="input-new-tag"
                  v-if="scope.row.inputVisible"
                  v-model="scope.row.inputValue"
                  ref="saveTagInput"
                  size="small"
                  @keyup.enter.native="handleInputConfirm(scope.row)"
                  @blur="handleInputConfirm(scope.row)"
                >
                </el-input>

                <el-button
                  v-else
                  class="button-new-tag"
                  size="small"
                  @click="showInput(scope.row)"
                  >+ New Tag</el-button
                >
              </template>
            </el-table-column>
            <el-table-column type="index"> </el-table-column>
            <el-table-column prop="attr_name" label="参数名称">
            </el-table-column>
            <el-table-column label="操作">
              <template slot-scope="scope">
                <el-button
                  type="primary"
                  size="mini"
                  icon="el-icon-edit"
                  @click="showEditDialog(scope.row.attr_id)"
                  >编辑</el-button
                >
                <el-button
                  type="danger"
                  size="mini"
                  icon="el-icon-delete"
                  @click="removeParams(scope.row.attr_id)"
                  >删除</el-button
                >
              </template>
            </el-table-column>
          </el-table>
        </el-tab-pane>

        <el-tab-pane label="静态属性" name="only">
          <!-- 按钮 -->
          <el-button
            :disabled="isBtnDisabled"
            size="mini"
            type="primary"
            @click="addDialogVisible = true"
            >添加属性</el-button
          >
          <!-- 表格 -->
          <el-table :data="onlyTableData" border stripe>
            <el-table-column type="expand">
              <template slot-scope="scope">
                <el-tag
                  v-for="(item, i) in scope.row.attr_vals"
                  :key="i"
                  closable
                  @close='handleClose(i, scope.row)'
                  >{{ item }}</el-tag
                >

                <el-input
                  class="input-new-tag"
                  v-if="scope.row.inputVisible"
                  v-model="scope.row.inputValue"
                  ref="saveTagInput"
                  size="small"
                  @keyup.enter.native="handleInputConfirm(scope.row)"
                  @blur="handleInputConfirm(scope.row)"
                >
                </el-input>

                <el-button
                  v-else
                  class="button-new-tag"
                  size="small"
                  @click="showInput(scope.row)"
                  >+ New Tag</el-button
                >
              </template>
            </el-table-column>
            <el-table-column type="index"> </el-table-column>
            <el-table-column prop="attr_name" label="属性名称">
            </el-table-column>
            <el-table-column label="操作">
              <template slot-scope="scope">
                <el-button
                  type="primary"
                  size="mini"
                  icon="el-icon-edit"
                  @click="showEditDialog(scope.row.attr_id)"
                  >编辑</el-button
                >
                <el-button
                  type="danger"
                  size="mini"
                  icon="el-icon-delete"
                  @click="removeParams(scope.row.attr_id)"
                  >删除</el-button
                >
              </template>
            </el-table-column>
          </el-table>
        </el-tab-pane>
      </el-tabs>

      <!-- 添加对话框 -->
      <el-dialog
        :title="'添加' + titleText"
        :visible.sync="addDialogVisible"
        width="50%"
        @close="addDialogClosed"
      >
        <el-form
          ref="addFormRef"
          :model="addForm"
          :rules="addFormRules"
          label-width="80px"
        >
          <el-form-item :label="titleText" prop="attr_name">
            <el-input v-model="addForm.attr_name"></el-input>
          </el-form-item>
        </el-form>
        <div slot="footer">
          <el-button @click="addDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="addParams">确 定</el-button>
        </div>
      </el-dialog>

      <!-- 编辑对话框 -->
      <el-dialog
        :title="'编辑' + titleText"
        :visible.sync="editDialogVisible"
        width="50%"
        @close="editDialogClosed"
      >
        <el-form
          ref="editFormRef"
          :model="editForm"
          :rules="editFormRules"
          label-width="80px"
        >
          <el-form-item :label="titleText" prop="attr_name">
            <el-input v-model="editForm.attr_name"></el-input>
          </el-form-item>
        </el-form>
        <div slot="footer">
          <el-button @click="editDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="editParams">确 定</el-button>
        </div>
      </el-dialog>
    </el-card>
  </div>
</template>

<script>
export default {
  data() {
    return {
      catelist: [],
      selectedCateKeys: [],
      activeName: "many",
      manyTableData: [],
      onlyTableData: [],
      addDialogVisible: false,
      editDialogVisible: false,
      addForm: {
        attr_name: "",
      },
      editForm: {
        attr_name: "",
      },
      addFormRules: {
        attr_name: [
          { required: true, message: "请输入参数名称", trigger: "blur" },
        ],
      },
      editFormRules: {
        attr_name: [
          { required: true, message: "请输入参数名称", trigger: "blur" },
        ],
      },
    }
  },
  created() {
    this.getCateList()
  },
  methods: {
    async getCateList() {
      const { data: res } = await this.$http.get("categories")
      if (res.meta.status !== 200) {
        return this.$Message.error("获取失败")
      }
      this.catelist = res.data
      // console.log(this.catelist)
    },
    handleChange() {
      // console.log(this.selectedCateKeys);
      this.getParamsData()
    },
    handleTabClick() {
      // console.log(this.activeName)
      this.getParamsData()
    },
    async getParamsData() {
      if (this.selectedCateKeys.length !== 3) {
        this.selectedCateKeys = []
        this.manyTableData = []
        this.onlyTableData = []
      }
      const { data: res } = await this.$http.get(
        `categories/${this.cateId}/attributes`,
        {
          params: { sel: this.activeName },
        }
      )
      if (res.meta.status !== 200) {
        return this.$Message.error("获取失败")
      }
      res.data.forEach((item) => {
        item.attr_vals = item.attr_vals ? item.attr_vals.split(" ") : []
        item.inputVisible = false
        item.inputValue = ""
      })

      console.log(res.data)

      if (this.activeName === "many") {
        this.manyTableData = res.data
      } else {
        this.onlyTableData = res.data
      }
    },
    addDialogClosed() {
      this.$refs.addFormRef.resetFields()
    },
    editDialogClosed() {
      this.$refs.editFormRef.resetFields()
    },
    addParams() {
      this.$refs.addFormRef.validate(async (valid) => {
        if (!valid) return
        const { data: res } = await this.$http.post(
          `categories/${this.cateId}/attributes`,
          {
            attr_name: this.addForm.attr_name,
            attr_sel: this.activeName,
          }
        )
        if (res.meta.status !== 201) {
          return this.$Message.error("添加失败")
        }

        this.addDialogVisible = false
        this.getParamsData()
      })
    },
    editParams() {
      this.$refs.editFormRef.validate(async (valid) => {
        if (!valid) return
        const {
          data: res,
        } = await this.$http.put(
          `categories/${this.cateId}/attributes/${this.editForm.attr_id}`,
          { attr_name: this.editForm.attr_name, attr_sel: this.activeName }
        )
        if (res.meta.status !== 200) {
          return this.$Message.error("请求失败")
        }
        this.getParamsData()
        this.editDialogVisible = false
      })
    },
    async showEditDialog(attr_id) {
      const {
        data: res,
      } = await this.$http.get(
        `categories/${this.cateId}/attributes/${attr_id}`,
        { params: { attr_sel: this.activeName } }
      )
      if (res.meta.status !== 200) {
        return this.$Message.error("请求失败")
      }
      this.editForm = res.data
      console.log(res)
      this.editDialogVisible = true
    },
    async removeParams(attr_id) {
      const confirmResults = await this.$confirm(
        "此操作将永久删除该参数, 是否继续?",
        "提示",
        {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning",
        }
      ).catch((err) => err)
      if (confirmResults !== "confirm") {
        return this.$Message.info("已取消删除")
      }
      const { data: res } = await this.$http.delete(
        `categories/${this.cateId}/attributes/${attr_id}`
      )
      if (res.meta.status !== 200) {
        return this.$Message.error("删除失败")
      }
      this.editDialogVisible = false
      this.getParamsData()
    },
    handleInputConfirm(row) {
      console.log("ok")
      if (row.inputValue.trim().length === 0) {
        row.inputValue = ""
        row.inputVisible = false
        return
      }
      row.attr_vals.push(row.inputValue.trim())
      row.inputValue = ""
      row.inputVisible = false
      
      this.saveAttrVals(row)
    },
    showInput(row) {
      row.inputVisible = true
      this.$nextTick((_) => {
        this.$refs.saveTagInput.$refs.input.focus()
      })
    },
    handleClose(i, row) {
      row.attr_vals.splice(i, 1)
      this.saveAttrVals(row)

    },
    async saveAttrVals(row) {
      const {
        data: res,
      } = await this.$http.put(
        `categories/${this.cateId}/attributes/${row.attr_id}`,
        {
          attr_name: row.attr_name,
          attr_sel: row.attr_sel,
          attr_vals: row.attr_vals.join(" "),
        }
      )
      if (res.meta.status !== 200) {
        return this.$Message.error("添加失败")
      }
      console.log("ok!")

    }
  },
  computed: {
    isBtnDisabled() {
      if (this.selectedCateKeys.length !== 3) {
        return true
      }
      return false
    },
    cateId() {
      if (this.selectedCateKeys.length == 3) {
        return this.selectedCateKeys[2]
      }
      return null
    },
    titleText() {
      if (this.activeName === "many") {
        return "动态参数"
      }
      return "静态属性"
    },
  },
}
</script>

<style lang="less" scoped>
.cat_opt {
  margin: 15px 0;
}
.el-cascader {
  width: 30%;
}
.input-new-tag {
  width: 120px;
}
.el-tag {
  margin: 10px;
}
</style>
